2bf1d417c5
Change-Id: I0b87e2b36a282c773e5f2f4a96c23aeadecb1300 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/26751 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/io.h>
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#include <device/pci.h>
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#include <device/pci_ops.h>
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/*
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* Functions for accessing PCI configuration space with type 1 accesses
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*/
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#if !IS_ENABLED(CONFIG_PCI_IO_CFG_EXT)
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#define CONFIG_CMD(bus, devfn, where) (0x80000000 | (bus << 16) | \
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(devfn << 8) | (where & ~3))
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#else
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#define CONFIG_CMD(bus, devfn, where) (0x80000000 | (bus << 16) | \
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(devfn << 8) | ((where & 0xff) & ~3) |\
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((where & 0xf00)<<16))
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#endif
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static uint8_t pci_conf1_read_config8(struct bus *pbus, int bus, int devfn,
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int where)
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{
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outl(CONFIG_CMD(bus, devfn, where), 0xCF8);
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return inb(0xCFC + (where & 3));
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}
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static uint16_t pci_conf1_read_config16(struct bus *pbus, int bus, int devfn,
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int where)
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{
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outl(CONFIG_CMD(bus, devfn, where), 0xCF8);
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return inw(0xCFC + (where & 2));
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}
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static uint32_t pci_conf1_read_config32(struct bus *pbus, int bus, int devfn,
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int where)
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{
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outl(CONFIG_CMD(bus, devfn, where), 0xCF8);
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return inl(0xCFC);
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}
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static void pci_conf1_write_config8(struct bus *pbus, int bus, int devfn,
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int where, uint8_t value)
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{
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outl(CONFIG_CMD(bus, devfn, where), 0xCF8);
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outb(value, 0xCFC + (where & 3));
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}
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static void pci_conf1_write_config16(struct bus *pbus, int bus, int devfn,
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int where, uint16_t value)
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{
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outl(CONFIG_CMD(bus, devfn, where), 0xCF8);
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outw(value, 0xCFC + (where & 2));
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}
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static void pci_conf1_write_config32(struct bus *pbus, int bus, int devfn,
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int where, uint32_t value)
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{
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outl(CONFIG_CMD(bus, devfn, where), 0xCF8);
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outl(value, 0xCFC);
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}
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#undef CONFIG_CMD
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const struct pci_bus_operations pci_cf8_conf1 = {
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.read8 = pci_conf1_read_config8,
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.read16 = pci_conf1_read_config16,
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.read32 = pci_conf1_read_config32,
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.write8 = pci_conf1_write_config8,
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.write16 = pci_conf1_write_config16,
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.write32 = pci_conf1_write_config32,
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};
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